Calls intensified on Capitol Hill Thursday for the U.S. to curb Saudi weapons sales and to rethink bilateral ties if Riyadh is found to be behind the killing of a well-known Saudi journalist.

WASHINGTON—Calls intensified on Capitol Hill Thursday for the Trump administration to curb weapons sales to Saudi Arabia and to rethink bilateral ties should an investigation reveal that Riyadh is behind the disappearance and suspected killing of a well-known Saudi journalist.

President Trump, for a second day, expressed concern over what Turkey says is Saudi Arabia’s role the disappearance and likely killing of Jamal Khashoggi.